Product comparison · 2 cpus

Dell Xeon E5-2403 vs Dell Xeon X5660

42specifications compared
18differ
24identical
13known for one product only

Key differences

The Dell Xeon X5660 has 1 GHz more processor base frequency than the Dell Xeon E5-2403 (2.8 GHz vs 1.8 GHz). The Dell Xeon X5660 has 2 more processor cores than the Dell Xeon E5-2403 (6 vs 4). The Dell Xeon X5660 has 8 more processor threads than the Dell Xeon E5-2403 (12 vs 4). Only the Dell Xeon E5-2403 has thermal Monitoring Technologies. Only the Dell Xeon X5660 has Intel® Hyper Threading Technology (Intel® HT Technology).

Processor family
- Xeon E5-2403:Intel® Xeon® E5 Family
- Xeon X5660:Intel® Xeon® 5000 Sequence
Processor model
- Xeon E5-2403:E5-2403
- Xeon X5660:X5660
Processor base frequency
- Xeon E5-2403:1.8 GHz
- Xeon X5660:2.8 GHz
Processor cores
- Xeon E5-2403:4
- Xeon X5660:6
Processor socket
- Xeon E5-2403:LGA 1356 (Socket B2)
- Xeon X5660:Socket B (LGA 1366)
Processor threads
- Xeon E5-2403:4
- Xeon X5660:12
Processor cache
- Xeon E5-2403:10 MB
- Xeon X5660:12 MB
Thermal Design Power (TDP)
- Xeon E5-2403:80 W
- Xeon X5660:95 W

Side by side

Differences highlightedShow differences only

Comparison of Xeon E5-2403, Xeon X5660
55 specifications	A Dell Xeon E5-2403 View product	B Dell Xeon X5660 View product
Processor11 differ
Processor familyDiffers	Intel® Xeon® E5 Family	Intel® Xeon® 5000 Sequence
Processor modelDiffers	E5-2403	X5660
Processor base frequencyDiffers	1.8 GHz	2.8 GHz
Processor coresDiffers	4	6
Processor socketDiffers	LGA 1356 (Socket B2)	Socket B (LGA 1366)
Processor lithography	32 nm	32 nm
Component for	Server/workstation	Server/workstation
Processor threadsDiffers	4	12
System bus rate	6.4 GT/s	6.4 GT/s
Processor operating modes	64-bit	64-bit
Processor cacheDiffers	10 MB	12 MB
Processor cache type	L3	L3
L3 cache speedKnown for one	1.8 GHz	Unknown — not stated by the source
Thermal Design Power (TDP)Differs	80 W	95 W
VID Voltage RangeDiffers	0.6 - 1.35 V	0.750 - 1.350 V
SteppingKnown for one	M1	Unknown — not stated by the source
Bus type	QPI	QPI
Number of QPI linksDiffers	1	2
Memory bandwidth supported by processor (max)Differs	25 GB/s	32 GB/s
Package typeKnown for one	Unknown — not stated by the source	Tray
Processor boost frequencyKnown for one	Unknown — not stated by the source	3.2 GHz
CPU multiplier (bus/core ratio)Known for one	Unknown — not stated by the source	21
Memory2 differ
Maximum internal memory supported by processorDiffers	384 GB	288 GB
Memory types supported by processor	DDR3-SDRAM	DDR3-SDRAM
Memory clock speeds supported by processorDiffers	800,1066 MHz	800,1066,1333 MHz
Memory channels	Triple-channel	Triple-channel
ECC	Yes	Yes
Graphicsidentical
On-board graphics card	No	No
Features2 differ
Execute Disable Bit	Yes	Yes
Idle States	Yes	Yes
Thermal Monitoring TechnologiesDiffers	Yes	No
Market segment	Server	Server
Maximum number of PCI Express lanesKnown for one	40	Unknown — not stated by the source
PCI Express slots versionKnown for one	3.0	Unknown — not stated by the source
Supported instruction setsDiffers	AVX	SSE4.2
CPU configuration (max)	2	2
Embedded options available	No	No
ScalabilityKnown for one	S2S	Unknown — not stated by the source
Physical Address Extension (PAE)Known for one	Unknown — not stated by the source	Yes
Processor special features2 differ
Enhanced Intel SpeedStep Technology	Yes	Yes
Intel Flex Memory AccessKnown for one	Yes	Unknown — not stated by the source
Intel Trusted Execution Technology	Yes	Yes
Intel® AES New Instructions (Intel® AES-NI)	Yes	Yes
Intel® Hyper Threading Technology (Intel® HT Technology)Differs	No	Yes
Intel® Smart Cache	Yes	Yes
Intel® Turbo Boost TechnologyDiffers	No	Yes
Intel Demand Based Switching	Yes	Yes
Intel Enhanced Halt StateKnown for one	Yes	Unknown — not stated by the source
Intel VT-x with Extended Page Tables (EPT)	Yes	Yes
Intel Virtualization Technology (VT-x)	Yes	Yes
Intel Virtualization Technology for Directed I/O (VT-d)	Yes	Yes
Intel® vPro™ Platform EligibilityKnown for one	Yes	Unknown — not stated by the source
Weight & dimensions1 differ
Processor package sizeDiffers	45 mm	42.5 mm
Other featuresidentical
Intel® Virtualization Technology (Intel® VT)	VT-d, VT-x	VT-d, VT-x
Operational conditionsidentical
TcaseKnown for one	Unknown — not stated by the source	81.3 °C

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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